Reads IIS Version of the registry

GetIisVersion.cs

/// <summary>
/// Gets the IIS version from registry.
/// </summary>
/// <remarks>
/// From SO: http://stackoverflow.com/a/1699947/190476
/// </remarks>
public Version GetIisVersion()
{
    using (RegistryKey componentsKey = Registry.LocalMachine.OpenSubKey(@"Software\Microsoft\InetStp", false))
    {
        if (componentsKey != null)
        {
            int majorVersion = (int)componentsKey.GetValue("MajorVersion", -1);
            int minorVersion = (int)componentsKey.GetValue("MinorVersion", -1);

            if (majorVersion != -1 && minorVersion != -1)
            {
                return new Version(majorVersion, minorVersion);
            }
        }

        return new Version(0, 0);
    }
}